One thing that might be useful is to allow a given server in the chain to fail. For example, if you had a Proxmox (or other hypervisor) cluster, in the event that a single node fails to come up, you'd probably want everything else to still boot. Or maybe it would be easier if there was a separate category for VM vs. hypervisor?
Either way, neat project, and thank you for sharing.
Either way, neat project, and thank you for sharing.